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Electrocondensation and Evaporation of Attoliter Water Droplets: Direct Visualization Using Atomic Force Microscopy

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Nano Research 2010年第5期3卷 307-316页

作者： Narendra Kurra Adina scott Giridhar U.Kulkarni Chemistry and Physics of Materials Unit and DST Unit on Nanoscience Jawaharlal Nehru Centre for Advanced Scientific ResearchJakkur POBangalore 560064India Birck Nanotechnology Center Purdue UniversityWest LafayetteIndiana 47907USA

Working with a biased atomic force microscope(AFM)tip in the tapping mode under ambient atmosphere,attoliter(10^(-18) L)water droplet patterns have been generated on a patterned carbonaceous *** is essentially electrocondensation of water leading to charged droplets,as evidenced from electrostatic force microscopy *** droplets are unusual in that they exhibit a highly corrugated surface and evaporate rather slowly,taking several tens of minutes.

关键词： Electrocondensation attoliter water droplets biased atomic force microscope(AFM)lithography electron beam induced deposition carbonaceous deposition

Forge AHEAD with stricter criteria in future trials of embolic stroke of undetermined source

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Neural Regeneration Research 2022年第5期17卷 1009-1010页

作者： David Z.Rose scott E.Kasner Department of Neurology Morsani College of MedicineUniversity of South FloridaTampaFLUSA Department of Neurology Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPAUSA

What lurks within the crypt?With more than 200 known causes of is chemic stroke(Saver,2016),what should be the minimum work up?Many centers offer high-resolution brain imaging and vessel studies,telemetry monitoring f... 详细信息

关键词： strict thoracic centers

Recent progress in methane dehydroaromatization: From laboratory curiosities to promising technology

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Journal of Energy Chemistry 2013年第1期22卷 1-20页

作者： Shuqi Ma Xiaoguang Guo Lingxiao Zhao Susannah scott Xinhe Bao State Key Laboratory of Catalysis Dalian Institute of Chemical Physics the Chinese Academy of Sciences School of Physics and Chemistry Henan Polytechnic University Department of Chemistry & Biochemistry and Department of Chemical Engineering University of California Santa Barbara

Direct conversion of methane to benzene or other valuable chemicals is a very promising process for the efficient application of natural gas. Compared with conversion processes that require oxidants, non-oxidative direct conversion is more attractive due to high selectivity to the target product. In this paper, an alternative route for methane dehydrogenation and selective conversion to benzene and hydrogen without the participation of oxygen is discussed. A brief review of the catalysts used in methane dehydroaromatization （MDA） is first given, followed by our current understanding of the location and the active phase of Mo species, the reaction mechanism, the mechanism of carbonaceous deposit and the deactivation of Mo/zeolite catalysts are systematically discussed. Ways to improve the catalytic activity and stability are described in detail based on catalyst and reaction as well as reactor design. Future prospects for methane dehydroaromatization process are also presented.

关键词： direct conversion: methane methane dehydroaromatization Mo-based catalyst

Modelling sulphate-enhanced cadmium uptake by Zea mays from nutrient solution under conditions of constant free Cd^(2+) ion activity

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Journal of Environmental Sciences 2010年第7期22卷 1080-1085页

作者： Ulrico J.López-Chuken scott D.Young Division of Environmental Sciences School of ChemistryUniversidad Autónoma de Nuevo León Division of Agricultural & Environmental Sciences School of Biosciencesthe University of Nottingham

A controlled hydroponic experiment was undertaken to investigate Cd uptake in relation to the activity of Cd species in solution other than the free ion （Cd^2＋） by maintaining a constant Cd^2＋ activity under variable SO4^2- and Cl^- concentrations exposed to maize （Zea mays vat. Cameron） plants. The objectives of these experiments were：（1） to distinguish and quantify the different uptake rates of free and inorganic-complexed Cd from nutrient solution, and （2） to model the uptake of Cd by maize with a Biotic Ligand Model （BLM） in a system which facilitates the close examination of root characteristics. Results of the current experiments suggest that, in addition to the free ion, CdSO4^0 complexes are important factors in determining Cd uptake in nutrient solution by maize plants. Higher nominal SO4^2- concentrations in solution generally resulted in a greater Cd accumulation by maize plants than predicted by the Cd^2＋ activity. A better integration of the complete dataset for the 3 harvest times （6, 9 and 11 days after treatment） was achieved by including consideration of both the duration of Cd exposure and especially the root surface area to express Cd uptake. Similarly, the fit of the BLM was also improved when taking into account exposure time and expressing uptake in terms of root morphological parameters.

关键词： free ion activity model biotic ligand model root surface area Cd complexation metal exposure time hydroponics plant uptake

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Meiosis 1

B lymphocytes regulate airway granulocytic inflammation and cytokine production in a murine model of fungal allergic asthma

丛书名： Methods in molecular biology 558

2009年

作者： scott Keeney(1)

v. 1. Molecular and genetic methods. v. 2. Cytological methods.

ISBN: (纸本)9781607611028

v. 1. Molecular and genetic methods. v. 2. Cytological methods.

关键词： methods molecular biology cytological volume meiosisCell Biology Biology Biological Sciences Science & Math

来源：畅想之星图书光盘版（南... 评论

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Cellular & Molecular Immunology 2015年第2期12卷 202-212页

作者： Sumit Ghosh scott A Hoselton scott V Asbach Breanne N Steffan Steve B Wanjara Glenn P Dorsam Jane M Schuh Department of Veterinary and Microbiological Sciences North Dakota State University Fargo ND USA

Sensitization to fungi often leads to a severe form of asthma that is particularly difficult to manage clinically, resulting in increased morbidity and hospitalizations in these patients. Although B lymphocytes might exacerbate asthma symptoms through the production of IgE, these cells might also be important in the protective response against inhaled fungi. Through cytokine release and T-cell interactions, these lymphocytes might also influence the development and maintenance of airway wall fibrosis. JH-/- mice lack the JHgene for the heavy chain component of antibodies, which is critical for B-cell function and survival. These animals have facilitated the elucidation of the role of B iymphocytes in a number of immune responses; however, JH-/- mice have not been used to study fungal allergy. In this study, we examined the role of B lymphocytes using an Aspergillus fumigatus murine fungal aeroallergen model that mimics human airway disease that is triggered by environmental fungal exposure. We compared disease progression in sensitized wild-type BALB/c and JH-/- mice that were exposed to repeated fungal exposure and found no differences in airway hyperresponsiveness, overall pulmonary inflammation or collagen deposition around the large airways. However, the levels of the Th2-type cytokines IL-4 and IL-13 were significantly attenuated in the airways of JH-/- mice relative to the BALB/c controls. By contrast, levels of the inflammatory cytokines IL-17A and IL-6 were significantly elevated in the JH-/- animals, and there was significantly more robust airway eosinophilia and neutrophilia than in control animals. Taken together, these findings demonstrate that B lymphocytes help to regulate granulocytic responses to fungal exDosure in the pulmonary compartment.

关键词： Aspergillus fumigatus B lymphocytes inflammation

Environmental impact improvements due to introducing automation into underground copper mines

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International Journal of Mining Science and Technology 2021年第6期31卷 1159-1167页

作者： Kyle Moreau Corey Laamanen Ron Bose Helen Shang John Ashley scott School of Engineering Laurentian UniversitySudburyON P3E 2C6Canada XPS–Glencore Greater SudburyON P0M 1S0Canada

A life-cycle assessment(LCA) model was developed to comparatively analyze the use of manual and automated mining equipment in underground copper mine *** and key variables that were determined to contribute to the environmental impact of operations were identified for six mine sites in a range of geographical locations around the *** model successfully calculated carbon dioxide(CO_(2) eq.) emissions to within 4.9% of the reported annual emissions from the site's respective *** implementation of automation was found to decrease global warming potential by a range of 11.4%-18.0% or 3.9-17.9 kg CO_(2) eq./t *** model was also used to estimate the average reductions across several impact potentials including,acidification(11.9%-17.8%),eutrophication(7.6%-13.7%),and human toxicity(16.0%-20.0%).World-wide the mining industry is moving toward introducing significantly more automation to enhance productivity and *** novel work demonstrates an important third dimension that can support this move,reduced environmental impact.

关键词： Automation Underground copper mines Environmental improvements Life cycle assessment Modelling

Education Universalization,Rural School Participation,and Population Density

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China & World Economy 2022年第4期30卷 4-30页

作者： Xi Zhang scott Rozelle Institute of Population and Labor Economics Chinese Academy of Social SciencesChina Freeman Spogli Institute for International Studies Stanford Universitythe US

In many developing countries,low population density may be a major reason for low school participation in rural areas,and the problem is likely to worsen with rapid ***,few studies have investigated empirically the role of population density in rural education,especially the moderating effect of population density on the outcomes of education *** study aims to fill this gap in the *** 1999 through the early 2000s,China launched a set of major nationwide policies aimed at universalizing 9-year compulsory education in rural *** difference-in-differences and triple difference strategies,we show that the policies significantly increased the probability of junior high school enrollment of rural children and,more importantly,these policies were more effective in densely populated *** findings confirm the imporance of population density to rural education.

关键词： enrollment rate policy effectiveness rural population density universal 9-year compulsory education policy

Telemedicine for sarcoma patient care

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Journal of Cancer Metastasis and Treatment 2022年第1期8卷 140-149页

作者： scott M.Schuetze Division of Hematology/Oncology Department of Internal MedicineUniversity of MichiganAnn ArborMI 48109USA

Telemedicine is being incorporated into routine healthcare,including *** integration of telemedicine with patient electronic medical records and the adoption of virtual provider-patient encounters was accelerated by the SARS-CoV2 worldwide *** telemedicine has existed for more than 50 years,the impact of telemedicine on patient care and health outcomes is relatively understudied,and little research has been conducted on telehealth in the care of patients with *** review discusses the potential applications of telemedicine to the care of patients with sarcoma and some of the data available on patient and provider preferences for telemedicine ***-person healthcare *** of the areas of care in which greater adoption of telemedicine may be beneficial to patients with sarcoma are also discussed.

关键词： Sarcoma telemedicine telepathology telehealth virtual multidisciplinary